Question

what is the significance of lonosphere​

Answer 1

Answer:

Generally, vertically emitted electromagnetic waves are reflected when the plasma frequency of the background is higher than the frequency of the signal. The ionosphere can be described by means of regions of enhanced electron concentration (these regions are called ionospheric layers: D,E, F1, F2).

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Answer 2

Answer:

the ionosphere is important because it reflects and modifies radio waves used for communication and navigation. Other phenomena such as energetic charged particles and cosmic rays also have an ionizing effect and can contribute to the ionosphere.

or

The ionosphere is ionized by solar radiation. It plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.

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